Apple on Monday seeded OS X 10.10.4 Beta 3 to developers and public beta testers, coming approximately two weeks following the release of OS X Yosemite 10.10.4 Beta 2.
The third beta, build 14E17e, can be downloaded via the “Update” tab in the Mac App Store, and is also available in the Mac Developer Center.
Apple is asking developers to focus on Photos, Migration, and Arabic and Hebrew languages this go-round.
So far, OS X 10.10.4 looks to be a relatively quiet update, features-wise, instead concentrating on performance enhancements and bug fixes.